Oh okay! I'm relieved now... I thought for a second maybe her hair was falling out... her hair is pretty thin as it is, I don't need any more falling out.
It could be puppy mats... I could brush this girl every hour and she would still have tangles... as soon as I brush her she feels the need to rub her body on her blankets and mess up her hair. LOL
Well it's nice to know this is normal. Thanks everyone!